<template>
  <div style="margin-top: 10px; margin-bottom: 80px">
    <el-card>
      <div style="padding: 20px; color: #888">
        <div>
          <el-input type="textarea" :rows="3" v-model="entity.content"></el-input>
          <div style="text-align: right; padding: 10px"><el-button type="primary" @click="save">留言</el-button></div>
        </div>
      </div>

      <div style="display: flex; padding: 20px" v-for="item in messages">
        <div style="text-align: center; flex: 1">
          <el-image :src="item.avatar" style="width: 60px; height: 60px; border-radius: 50%"></el-image>
        </div>
        <div style="padding: 0 10px; flex: 5">
          <div><b style="font-size: 14px">{{ item.username }}</b></div>
          <div style="padding: 10px 0; color: #888">
            {{ item.content }}
            <el-button type="text" size="mini" @click="del(item.id)" v-if="item.username === user.username">删除</el-button>
          </div>
          <div style="background-color: #eee; padding: 10px" v-if="item.parentMessage">{{ item.username }}：{{ item.parentMessage.content }}</div>
          <div style="color: #888; font-size: 12px">
            <span>{{ item.time  }}</span>
            <el-button type="text" style="margin-left: 20px" @click="reReply(item.id)">回复</el-button>
          </div>
        </div>
      </div>

      <el-dialog title="回复信息":visible.sync="dialogFormVisible" width="30%">
        <el-form :model="entity" label-width="80px">
          <el-form-item label="内容">
            <el-input v-model="entity.reply" autocomplete="off" type="textarea" :rows="3"></el-input>
          </el-form-item>
        </el-form>
        <template #footer>
          <el-button @click="cancel">取 消</el-button>
          <el-button type="primary" @click="reply">确 定</el-button>
        </template>
      </el-dialog>
    </el-card>


  </div>
</template>

<script>
    import request from "@/utils/request";

    export default {
        name: "Message",
        data() {
            return {
                user: {},
                messages: [],
                dialogFormVisible: false,
                isCollapse: false,
                entity: {}
            }
        },
        created() {
            this.user = sessionStorage.getItem("user") ? JSON.parse(sessionStorage.getItem("user")) : {};
            this.loadMessage();


        },
        methods: {
            loadMessage() {
                // 如果是留言的话，就写死=0
                // 如果是 评论，则需要设置 当前被评论的模块的id作为foreignId
                let foreignId = 0;
                request.get("/message/foreign/" + foreignId).then(res => {
                    this.messages = res.data;
                })
            },
            cancel() {
                this.dialogFormVisible = false;
                this.entity = {};
            },
            reReply(id) {
                this.dialogFormVisible = true;
                this.entity.parentId = id;
            },
            reply() {
                this.entity.content = this.entity.reply;
                this.save();
            },

            save() {
                if (!this.user.username) {
                    this.$message({
                        message: "请登录",
                        type: "warning"
                    });
                    return;
                }
                if (!this.entity.content) {
                    this.$message({
                        message: "请填写内容",
                        type: "warning"
                    });
                    return;
                }
                // 如果是评论的话，在 save的时候要注意设置 当前模块的id为 foreignId。也就是  entity.foreignId = 模块id
                request.post("/message", this.entity).then(res => {
                    if (res.code === '0') {
                        this.$message({
                            message: "评论成功",
                            type: "success"
                        });
                    } else {
                        this.$message({
                            message: res.msg,
                            type: "error"
                        });
                    }
                    this.entity = {}
                    this.loadMessage();
                    this.dialogFormVisible = false;
                })
            },
            del(id) {
                request.delete("/message/" + id).then(res => {
                    this.$message({
                        message: "删除成功",
                        type: "success"
                    });
                    this.loadMessage()
                })
            }
        }
    }
</script>
